GearJammer

O.K., no more messin' around, she's going to be a rat bike & that's that! ROTFLMAO!

Finally got the frozen head bolts freed up & finished tearing down the top-end. This chopper had definitely had a fresh top-end job shortly before it stopped running.

Rockers, valves, valve guides, valve springs, pistons, piston rings...all new! Now, it had been bored to +.080 over & that's the ultimate limit before having to either go with new barrels or a resleeve, so this is the last go 'round with the current set-up. Valve faces have no carbon build-up, just a slight film. Bores aren't scored at all. Piston crowns have very minor carbon on them. Piston skirts are shiny with absolutely NO blowby, so the rings were doing their job & will be re-using those as well.

The only parts that were damaged were the intake pushrods, so ordered new pushrods & a top-end gasket set. Will be putting this one back together, clean the carb, clean the clutch plates, do the electrics & just go for it.

Will ride it as a rat bike & do any cleaning up or up-grading on a casual basis. Reasoning behind this is the +.080 overbore, which means that once these rings are gone, it'll be time for some serious work & $$$, so at that point in time down the road, the chop can be gone thru more meticulously.

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"Ridin' Ain't A Hobby, It's A Lifestyle"

1986 450 Rebel

Big_J

wow, 80 over, someone had plans for it. I cant wait to see a picture of it when its ratmofied. If I ever run up on the right one, I'm getting a rat bike also. I think I found a mid 80's yamaha 1100 for a way to cheap price, it will need a little work its too has been sitting. But we'll see what happens.

Later

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If people years were like dog years, What would we do with all the birthday cake?

GearJammer

The standard oversizes for re-boring these old Brits by the "purists" are .010, .020 & .040, but there's some aftermarket oversizes like .030, .060 & this .080 that some go with to extend the life of the barrels. Doesn't make any sense to me to give it up after .040, as there's still plenty of miles to pull out of 'em.

Hope that Yamaha pans out for ya, cTc! One of my buds (a Harley guy) scored an old Midnight Special from the '80's, 1100cc pretty sure & he LOVES it! Made him think twice about that "Harley only" mindset, LMAO!

__________________
"Ridin' Ain't A Hobby, It's A Lifestyle"

1986 450 Rebel

Big_J

I thought the 80 sounded a bit much

I hope to get my hands on the YaHa pretty soon, the guy is on the road so much I only have 1 or 2 days a week to catch up with him, and it usually dosent work out for one of us.

But we'll see.

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If people years were like dog years, What would we do with all the birthday cake?

GearJammer

Yep, that .080 over has the sleeve in the bore at the max limit & probably won't run this one as hard as the other (.030 over) But once this one has reached it's limit, have another set of jugs with plenty of bore left, just like to get as much mileage as possible before up-grading.

Do you know what model Yamaha it is ? I hadn't paid much attention to Japanese bikes during the Harley/Brit years. Never disliked 'em, just never really knew much about 'em other than the Jap bikes would run forever. Since getting that 250 Rebel, have had some excellent chats with Jap bike riders out there & learning more than I'd ever expected to at this late age. It's all good stuff & it's all definitely the same wind

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"Ridin' Ain't A Hobby, It's A Lifestyle"

1986 450 Rebel